cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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threads.h (1314B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef _LINUX_THREADS_H
      3#define _LINUX_THREADS_H
      4
      5
      6/*
      7 * The default limit for the nr of threads is now in
      8 * /proc/sys/kernel/threads-max.
      9 */
     10
     11/*
     12 * Maximum supported processors.  Setting this smaller saves quite a
     13 * bit of memory.  Use nr_cpu_ids instead of this except for static bitmaps.
     14 */
     15#ifndef CONFIG_NR_CPUS
     16/* FIXME: This should be fixed in the arch's Kconfig */
     17#define CONFIG_NR_CPUS	1
     18#endif
     19
     20/* Places which use this should consider cpumask_var_t. */
     21#define NR_CPUS		CONFIG_NR_CPUS
     22
     23#define MIN_THREADS_LEFT_FOR_ROOT 4
     24
     25/*
     26 * This controls the default maximum pid allocated to a process
     27 */
     28#define PID_MAX_DEFAULT (CONFIG_BASE_SMALL ? 0x1000 : 0x8000)
     29
     30/*
     31 * A maximum of 4 million PIDs should be enough for a while.
     32 * [NOTE: PID/TIDs are limited to 2^30 ~= 1 billion, see FUTEX_TID_MASK.]
     33 */
     34#define PID_MAX_LIMIT (CONFIG_BASE_SMALL ? PAGE_SIZE * 8 : \
     35	(sizeof(long) > 4 ? 4 * 1024 * 1024 : PID_MAX_DEFAULT))
     36
     37/*
     38 * Define a minimum number of pids per cpu.  Heuristically based
     39 * on original pid max of 32k for 32 cpus.  Also, increase the
     40 * minimum settable value for pid_max on the running system based
     41 * on similar defaults.  See kernel/pid.c:pid_idr_init() for details.
     42 */
     43#define PIDS_PER_CPU_DEFAULT	1024
     44#define PIDS_PER_CPU_MIN	8
     45
     46#endif